I have watched these guys here who work on-call at car yards to fix stonechips on used cars readying them for sale. I noticed that they use special equiptment which look like giant syringes which hold the particular paint that they have mixed on the spot and fill the holes in the paint surfaces with it. The paint looks very thick like wax and fill the spots easily. A quick polish when its dry will almost cure the damage when observing from say 2 metres. Closer look will still show the damage which has been given a quickie fix! Maybe this effect will only last for a few weeks or couple of months before going back to the original condition.